Abstract
The aging reactions in 18–20%Ni maraging steels containing Co, Mo and Ti have been investigated by means of calorimetric analysis and hardness measurement. With excess addition of Ti above about 1%, the formation of Mo rich zones, which is characteristic of Ti-free maraging steels, seems to be perfectly suppressed, and the precipitation of phases containing Ti is considered to occur.In an Fe-18%Ni-10%Co-5%Mo-2.1%Ti alloy, for example, the specific heat versus temperature curve is characterized by the appearance of three evolution peaks at 470, 540 and 600°C, corresponding to the precipitation of a low temperature phase containing Ti, Ni3Ti(DO24) and Ni3Mo. On the isothermal aging at about 500°C, this alloy hardens by precipitation of the low temperature Ti-phase in the early stage and by precipitation of Ni3Mo in the later stage.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Institute of Metals and Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
